Seigfbied l



(No Model.)

s. L, HOCKERT.

DEVICE FOR AGTUATI NG MORTAR PESTLES. No. 311,580. M PatentedPeb.3,1885.

Jf fi jzyvez ior NITED States Parana tries.

SEIGFRIED L. I'IOGKERT, OF CINCINNATI, OHIO.

DEVICE FOR ACTUATING MORTAR-PESTLES.

SPECIFICATION forming part of Letters Patent No. 311,580, dated February3, 1885.

Application ill (1 March 17, 188-1; (No model.)

To all whom, it may concern.-

Be it known that I, SEIGFRIED L. HooKER'r, a resident of Cincinnati, inthe county of Hamilton and State of Ohio, have invented certain new anduseful Improvements in Devices for Actuating Mortar-Pestles, of whichthe following is a specification.

My invention relates to an improvement in devices for actuating thepestle of a mortar.

The object of my invention is to provide a device which will securelyhold the mortarin position, in combination with attachments to thepestle which hold it firmly in position, and yet allow it to be rotatedeasily under the springpressure, for the purpose of more rapidly anduniformly triturating or pulverizing the material under the pestle, allof which will be fully set forth in the description of the ac companyingdrawings, in which- I Figure 1 represents a central vertical section ofmy improvement in position for use. Fig. 2 represents a bottom plan viewof the bed-plate on which the mortar is set. Fig. 3 is a plan view ofone of the feet of the standards.

A represents the mortar-table. It is provided with adjustable lugs a,which are secured in slots b, pierced in the table, as shown radially,so that the mortar may beheld firmly in position by the lugs, which maybe adjusted to suit different sizes of mortars.

B B represent serrated or notched standards, which are preferablysecured to the table by slotted feet 0 and setscrews D, which passthrough slots (1, pierced in the feet of the standards B, for thepurpose of adjusting the standards, if desired.

0 represents 'notches formed on the sides of the standards to receivethe pressurespring 1*]. Several notches e are provided on the edge ofthe standards B, so as to allow the spring E, which is held in positionin the notches to be adjusted up or down to increase or decrease thepressure upon the top of the an endless elastic band. It may be attachedto the top of the pestle H in any desired manner. The tension of thespring E holds the pestle down, and yet its elasticity allows it to berotated readily. Additional pressure may be imparted to the top of thepestle by lowering the ends of the spring-band E. WVhen thus arranged,the pestle can be rapidly and easily rotated under pressure of thespring, and the triturations accomplished in very much less time andwith much less fatigue than with the ordinary pestle.

I do not desire to limit myself to the form or shape of the standards BB and notches c e, as they may be variously modified without ati'ectingthe principal feature of my invention.

Having described my invention, what I claim as new, and desire to secureby Letters Patent, 1s

1. In combination with a mortar and pestle, standards B B and elasticpressure-band E,secured to the standards B and pestle H, substantiallyas specified.

2. In combination with a mortar and pestle, the standards B B,adjustably secured to the table A and adapted to receive the elasticpressure-band 1 substantially as shown and described.

3. In combination withthc mortar and pestle, the table A, provided withmeans substantially as shown and described, for holding the mortar, andhaving adj ustably secured thereto standards B B, said standards beingprovided with notches c e, and the elastic pressureband E, attached tothe pestle and adj ustably secured to the standards, substan tially asspecified.

In testimony whereof I have hereto set my hand.

SEIGFRIED L. H'OOKERT.

\Vitnesses:

ANDREW E. Scorn, A. GLUCHOWSKY.

pestle H. The spring Eis preferably made of 5

